User guide

j) Force digital outputs on- This command is used to force any of the 128 digital outputs ‘ON’.
No matter where the data comes from, an output that has been forced on can not be turned
off.
k) Force digital outputs off- This command is used to force any of the 128 digital outputs ‘OFF’.
No matter where the data comes from, an output that has been forced off can not be turned
back on.
l) Force analog to a value- This command is used to force any of the analog outputs (if in-
stalled) to a set value. Once an analog output has been forced to a to a level, no matter
where data comes from it will not change.
n) Set analog endpoints- This command is used to adjust the endpoints of the 16 analog out-
puts (if installed). The analog outputs normally sweep between 0 and 10 Volts DC. By using
these commands you can set either endpoint to anywhere between 0 and 10 volts for a re-
duced or reversed analog output swing. If you want to invert the voltage swing of any output,
all you need to do is set the lower limit to a higher level than the upper limit.
As an example of the use of the analog endpoint adjustments, if you wanted to set the
voltages on a channel to sweep from 2.5 volts to 7.5 volts: Looking at the chart at the end of
this manual, you can see that this would be from approximately 25% to 75% of full scale.
From the chart you would see that the values that should be entered would be 40h and C0h.
r) Download configuration- This command is used to save the current configuration of the
FSK/RTU through the serial port to a file on your computer. This file can then be reloaded into
this, or any other FSK/RTU. To use this command, you first invoke it, then following the instruc-
tions, you set your computer to receive a string of ASCII characters. You then press any key to
tell the FSK/RTU to send out it’s configuration. When it has finished, you then tell your computer
to stop saving characters, and then hit any key to tell the FSK/RTU to redraw the screen.
s) Upload configuration- This command is the compliment of the previous command. To invoke
it, all you need to do is tell your modem program to send the file saved by the ‘download’
command to the FSK/RTU. This will automatically invoke the upload command and store the in-
coming data. The data won’t be saved permanently until you invoke the ‘Write configura-
tion to EEPROM’.
t) Default configuration- This command reloads the default configuration to the FSK/RTU.
u) Read configuration from EEPROM- This reads the permanently stored configuration into the
FSK/RTU’s memory from the EPROM. This configuration is normally loaded by the FSK/RTU only
at boot up. This command can be used if you have made some changes in the configuration
that you now want the FSK/RTU to forget.
w) Write configuration to EEPROM- This command is used to write any changes you have made
in the configuration to the permanent EEPROM memory in the FSK/RTU.
x) eXit- This exits the configuration mode and returns the FSK/RTU to the command mode.
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